GB2142566B - Screw fasteners - Google Patents

Screw fasteners

Info

Publication number
GB2142566B
GB2142566B GB08413180A GB8413180A GB2142566B GB 2142566 B GB2142566 B GB 2142566B GB 08413180 A GB08413180 A GB 08413180A GB 8413180 A GB8413180 A GB 8413180A GB 2142566 B GB2142566 B GB 2142566B
Authority
GB
United Kingdom
Prior art keywords
screw fasteners
fasteners
screw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB08413180A
Other versions
GB8413180D0 (en
GB2142566A (en
Inventor
John Galbraith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB838314186A external-priority patent/GB8314186D0/en
Application filed by Individual filed Critical Individual
Priority to GB08413180A priority Critical patent/GB2142566B/en
Publication of GB8413180D0 publication Critical patent/GB8413180D0/en
Publication of GB2142566A publication Critical patent/GB2142566A/en
Application granted granted Critical
Publication of GB2142566B publication Critical patent/GB2142566B/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0038—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially prismatic with up to six edges, e.g. triangular, square, pentagonal, Allen-type cross-sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00—Screwdrivers
    • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
    • B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
GB08413180A 1983-05-23 1984-05-23 Screw fasteners Expired GB2142566B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08413180A GB2142566B (en) 1983-05-23 1984-05-23 Screw fasteners

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838314186A GB8314186D0 (en) 1983-05-23 1983-05-23 Fastener and driver mechanism
GB08413180A GB2142566B (en) 1983-05-23 1984-05-23 Screw fasteners

Publications (3)

Publication Number Publication Date
GB8413180D0 GB8413180D0 (en) 1984-06-27
GB2142566A GB2142566A (en) 1985-01-23
GB2142566B true GB2142566B (en) 1987-06-24

Family

ID=26286206

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08413180A Expired GB2142566B (en) 1983-05-23 1984-05-23 Screw fasteners

Country Status (1)

Country Link
GB (1) GB2142566B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4827811A (en) * 1987-12-11 1989-05-09 Southco, Inc. Tamper-resistant fastener and tool for operating same
DE4130500A1 (en) * 1991-09-13 1992-06-11 Johannes Jaeger Combination ball-point pen and screwdriver - has portions accommodated in common housing or usable separately

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB753367A (en) * 1953-02-25 1956-07-25 Thomas Leo Faul Socket head screw and driver therefor
FR1499117A (en) * 1965-05-17 1967-10-27 Wood and machine screws, with head of any shape, or without head, with hole against the head
GB1234436A (en) * 1968-10-08 1971-06-03
GB1498827A (en) * 1975-03-25 1978-01-25 Barlow J Screw and screwdriver

Also Published As

Publication number Publication date
GB8413180D0 (en) 1984-06-27
GB2142566A (en) 1985-01-23

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20040522